D6980: Create ~/.local/share/adblock/ if it doesn't exist

[Wolfgang Bauer]

wbauer created this revision.
wbauer added a project: KDE PIM.

REVISION SUMMARY
  Otherwise saving manual filters will fail, which will also result in the general settings (Enable Ad Block, Hide filtered elements, Update interval) not getting written at all.

TEST PLAN
  Run Akregator or KMail on a fresh user account or delete ~/.local/share/adblock/ before you run it.
  Enable the options "Enable Ad Block" and/or "Hide filtered elements" in the Adblock plugin settings (or disable them if they are already on) and click OK.
  Quit and restart Akregator/KMail.
  
  The settings are remembered now, before they were reverted again.
  
  Also, adding custom manual filter rules works now and they are remembered.
  
  Debug message "Unable to open rule file /home/xxx/.local/share/adblock/adblockrules_local" disappears too with the patch.

REPOSITORY
  R81 KDE PIM Addons

REVISION DETAIL
  https://phabricator.kde.org/D6980

AFFECTED FILES
  plugins/webengineurlinterceptor/adblock/lib/widgets/adblocksettingwidget.cpp

To: wbauer, mlaurent
Cc: #kde_pim, dvasin, winterz, vkrause, mlaurent, knauss, dvratil
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